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'London' Blue...

Known in the trade as 'London' blue topaz, a designation which refers to the deep rich hue of this fine gem. Both the clarity and luster are exeptional- a rare feature for a stone this size. While faceted topaz of over 100 carats are not uncommon, a weight of over 500 carats is rare for the species and, combined with the qualities of exeptional transparency and luster, make this an excellent offering. Approx. 501 carats.